The news reminded us of this funny public exchange between Ebersman and Facebook COO Sheryl Sandberg in February in which Sandberg insulted him.

Ebersman was asked by the Goldman Sachs interviewer about how he decides to pay for Facebook's new projects because that stuff "costs money." Sandberg interrupted, saying, "David never asks us about that. He's always like 'No.'"

The audience laughed and the question was posed again. Ebersman said with a smile:

"I have to digest Sheryl's insult first."

The audience laughed again. Seems like every executive and everyone in finance could relate to this kind of conversation.

To be sure, on the earnings call with analysts on Wednesday, Sandberg had nothing but praise for Ebersman.

And we also have to point out that after that exchange, Facebook had no problem spending plenty of money for new projects. Days later, it bought Whatsapp for $19 billion and then Oculus Rift for $2 billion, and a tiny U.K. drone-making company, Ascenta, reportedly for $20 million.